diff --git a/fastNLP/io/loader/summarization.py b/fastNLP/io/loader/summarization.py
deleted file mode 100644
index adca1867..00000000
--- a/fastNLP/io/loader/summarization.py
+++ /dev/null
@@ -1,66 +0,0 @@
-r"""
-.. todo::
-    doc
-"""
-
-__all__ = [
-    "ExtCNNDMLoader"
-]
-
-import os
-from typing import Union, Dict
-
-from ..data_bundle import DataBundle
-from ..utils import check_loader_paths
-from .json import JsonLoader
-
-
-class ExtCNNDMLoader(JsonLoader):
-    r"""
-    读取之后的DataSet中的field情况为
-
-    .. csv-table::
-       :header: "text", "summary", "label", "publication"
-
-       "['I got new tires from them and... ','...']", "['The new tires...','...']", "[0, 1]", "cnndm"
-       "['Don't waste your time.  We had two...','...']", "['Time is precious','...']", "[1]", "cnndm"
-       "['...']", "['...']", "[]", "cnndm"
-
-    """
-
-    def __init__(self, fields=None):
-        fields = fields or {"text": None, "summary": None, "label": None, "publication": None}
-        super(ExtCNNDMLoader, self).__init__(fields=fields)
-
-    def load(self, paths: Union[str, Dict[str, str]] = None):
-        r"""
-        从指定一个或多个路径中的文件中读取数据，返回 :class:`~fastNLP.io.DataBundle` 。
-
-        读取的field根据ExtCNNDMLoader初始化时传入的headers决定。
-
-        :param str paths: 传入一个目录, 将在该目录下寻找train.label.jsonl, dev.label.jsonl
-            test.label.jsonl三个文件(该目录还应该需要有一个名字为vocab的文件，在 :class:`~fastNLP.io.ExtCNNDMPipe`
-            当中需要用到)。
-
-        :return:  :class:`~fastNLP.io.DataBundle`
-        """
-        if paths is None:
-            paths = self.download()
-        paths = check_loader_paths(paths)
-        if ('train' in paths) and ('test' not in paths):
-            paths['test'] = paths['train']
-            paths.pop('train')
-
-        datasets = {name: self._load(path) for name, path in paths.items()}
-        data_bundle = DataBundle(datasets=datasets)
-        return data_bundle
-
-    def download(self):
-        r"""
-        如果你使用了这个数据，请引用
-
-        https://arxiv.org/pdf/1506.03340.pdf
-        :return:
-        """
-        output_dir = self._get_dataset_path('ext-cnndm')
-        return output_dir